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Finding the Fourth Proportional to 228,161.61, 342,154.94 and 78,373.98

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Solution

The fourth proportional to 228,161.61, 342,154.94 and 78,373.98 is: 117,530.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,161.61 : 342,154.94 = 78,373.98 : x
  2. Step 2: Convert to fraction form
    228,161.61/342,154.94 = 78,373.98/x
  3. Step 3: Cross multiply
    228,161.61x = 342,154.94 × 78,373.98
  4. Step 4: Simplify right side
    228,161.61x = 26,816,044,032.59
  5. Step 5: Solve for x
    x = 26,816,044,032.59/228,161.61
  6. Step 6: Final answer
    x = 117,530.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.